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MCB DC B40, 1000Vdc 10kA, 2P

https://unicat.msf.org/cat/product/98899
NSL PELEMCB02B40T

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OC subscriptions: included in supply or field order tools (e.g. UniField)
SC subscriptions: included in supply or field tools
OC validations: approved for procurement and use by an OC for international or local orders specifying context and activity in Medical Standard Lists (MSL)
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MCB DC B40, 1000Vdc 10kA, 2P

Form

  • MCB (miniature circuit breaker), 2 pole, 40 amps

  • tripping curve: B (magnetic trip range: 3 to 5 times rated current)

  • rated voltage: 1000 VDC

  • breaking capacity: 10 kA

  • modular design, standard DIN rail mountable (width approx. 36 mm for 2P)






Fit

  • Compatible with main circuit and distribution boards of similar make and technical specifications.

  • This device is specifically designed for the protection of a panel or a string of panels in a high-voltage DC circuit (e.g., photovoltaic installation) up to 1000 V.

  • Respecting the correct voltage polarity is required


Function

  • MCBs are electromechanical devices which protect an electrical circuit from an overcurrent (thermal protection) and short circuits (magnetic protection)

  • An MCB functions by interrupting the continuity of electrical flow through the circuit once a fault is detected

  • Curve B specifics: designed to trip instantaneously between 3 to 5 times the rated current.

    • comparison: this is more sensitive than the standard curve C (which trips at 5-10 x rated current)

    • application: curve B is strictly used for the protection of resistive loads (non-inductive) or circuits with long cable runs (where line impedance limits the short-circuit current)